seq 10
seq 10 -1 1
seq 1 2 10
for i in {10..1..-1};do echo $i;done
for i in {1..10..2};do echo $i;done
for i in `seq 10`;do echo $i;done
seq 10
seq 10 -1 1
seq 1 2 10
for i in {10..1..-1};do echo $i;done
for i in {1..10..2};do echo $i;done
for i in `seq 10`;do echo $i;done